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Details

  • Utilizing a hollow fiber membrane filter, the Sawyer system yields 1.3 liters of potable water per minute.
  • Simply fill the included gray reservoir with unfiltered water, attach the filter and filter hose and let gravity do the rest to fill the included blue reservoir
  • Once the blue reservoir is full, hang the reservoir from its handle using the included Nite Ize S-Biner loop and fill your water bottle, pots and pans
  • Or, attach the included drink tube and a bite valve of your choice (sold separately) and use the reservoir as you would any hydration system
  • Filter physically removes particles, protozoa, and bacteria down to 0.1 micron in size, including giardia, salmonella and cryptosporidia
  • All Sawyer water filters exceed Environmental Protection Agency (EPA) recommendations for removal rates
  • Filter is fully field maintainable to ensure a fast flow of water; system includes a faucet adapter for thorough back washing from a household faucet
  • Setup is simple and the system packs easily, weighing in at only 18 oz.
  • System includes a 4 liter gray reservoir, 4 liter blue reservoir, hollow fiber filter, faucet adapter, drink tube, quick-release hose adapter, S-Biner and instructions for use
  • Please note: Take care not to let your filter freeze as this could damage the filter housing or the fibers themselves

Made in USA.

View all Sawyer Gravity Water Filters

REI membership

Specs

Best Use Backpacking
Filter Type Gravity
Filter Medium Hollow fiber membranes
Removes/Destroys Protozoa and Bacteria
Pump Force Not applicable
Pump Strokes Per Liter Not applicable
Output 1.3 liters per minute
Housing Material Food grade ABS plastic
BPA Free Yes, Yes
Field Cleanable Yes
Dimensions 20 x 10 inches
Weight 18 ounces
Rated 5 out of 5 by from Excellent My partner & I have traveled a lot in India/Nepal & we do not want to add to the extensive pollution with a trail of plastic bottles. We used a pump filter & although excellent, took time. We gave this one to a friend living in Kathmandu who writes, "The water filter is working like a charm!!! I am never out of water, and its so easy because it just works with gravity! I just use tap water---nothing else required. And i know its good--and no illness! I would highly recommend it. Just maybe bring coat hangers or something because one of the bags does need to be higher than the other." If we stay in Asia for extensive time again, this filter is the one.
Date published: 2011-08-31
Rated 5 out of 5 by from Super Easy! We love this water filter. All you have to do is fill the dirty bag, prime the filter and then sit back while it does all the work. I have never used a pump filter and don't see any reason to ever change. The extra capacity is great when we are backpacking with the whole family. Plus it gives so much flexibility for extra water storage and hydration pack. One thing I do find helpful is to keep something with the filter to scoop water. If you have a shallow or slow moving water source it is almost impossible to fill the dirty bag. I cut a 20 oz bottle in half and keep it with the filter.
Date published: 2012-06-18
Rated 5 out of 5 by from Awesome and Easy! This is my first review. As a nurse specializing in infectious disease, good water while hiking is very important to say the least. I wanted more than the 0.2 micron filtration that many other products provide. This one has it! This Sawyer system is so easy to use. It filters very quickly, although alittle longer than the specs state by a minute. However, you can set it up and go on to other things to do when setting up camp and then fresh water is ready for you! Thanks for a great product!!
Date published: 2013-01-06
Rated 5 out of 5 by from Great filter! I used this filter system in the BWCA last week to filter water for a group of 5. I tested it ahead of time and it performed as well in the field as it did in my kitchen. Filtered 4 liters in mere minutes with no effort. There was no discernible slowing of the filtering process over the course of our 4 day trip. I had previously owned a Katadyn Base Camp Filter which clogged after 2 days. The Sawyer is not as easy to fill but so much more reliable! I bought a Sea to Summit collapsible bucket to fill it with and that worked great. I do agree with a previous reviewer that you need extra bungee cords for hanging this system. I got a stuff sack to hold the filtering system, bucket, and bungees so it is ready to go. When I got home I back-flushed the filter until water was clear, followed the sanitization procedure and left it out to dry. So easy!
Date published: 2013-07-26
Rated 5 out of 5 by from Outstanding filter system! My friends and I just returned from 10 days floating the Dean River in the wilderness of British Columbia. We were dropped off and picked up by helicopter, so weight was an issue. The weather was hot and humid, and it became quickly apparent that maintaining hydration would be a top priority. This filter exceeded every expectation for producing water for the three of us. Every day, when setting up a new camp, we would assemble our filter station and immediately start producing water. Using a length of climbing webbing prussocked around a tree branch or tent pole, we would hang the filter bags. Then right next to it we would hang an REI collapsable bucket which would be used to fill the grey filter bag, and we would place a five-gallon collapsable water jug below the blue bag. Then it was a simple matter of keeping the grey bag full and emptying the blue bag. With the filler bucket hung from its own branch "cycling the water maker" as we called it took just a couple of minutes including the trip to the river, and one person could do the whole job. Throughput was excellent. Filling the 5-gallon jug took at most one hour. The only quibble I have with the whole system is rolling it up for transport. The bags don't nest or roll well, and are difficult to store in a safe and space-efficient manner. However, that is no reason not to buy this product.
Date published: 2013-08-12
Rated 5 out of 5 by from Ideal system for volume This system is ideal for filtering volume large hydration needs or for bigger groups. The liter/min filter rate is a bit inflated as others have said. It does take about 10-15 min for the full 4qt/1gal to filter. It is a bit bulky for a single person, but it's capability to accomodate small groups makes it negligable with gear distribution. The valve on the blue bag makes filling other containers/bladders quite easy. I wish the extra hose they provided to turn it into a hydration bladder would have come with a bite valve, but with my picky prefferences to them I probbably would have replaced it anyway. I purchased a SteriPEN FitsAll Filter from REI to keep sediment out of the gray bag and prevent clogging. Works like a champ. It fits so well into the gray bag opening you'd think it was manufactured just for it. Link for SteriPEN FitsAll Filter: http://www.rei.com/product/784450/steripen-fitsall-filter I recommend a small bailing bucket or plastic bottle with the top cut off to collect water and pour into the gray bag. Can be a bit cumbersome to try and dip the bladder into shallow water.
Date published: 2013-05-21
Rated 4 out of 5 by from Scout proof, nothing better! I am a scout leader, we take 3-4 high adventure trips per year in the North Cascades, Alpine Lakes and Mt. Rainier area with 12 people for 2-5 days each. This filter has been bullet proof in all conditions, and performs admirably even in waters full of glacial silt. A simple back flow is all the cleaning it has ever needed on trail. This is our main source of water and is constantly in use in camp. The only downside it has is that the grey water bag needs to be filled in water deep enough to submerge it, or you need to fill it using another container. I feel the that the fill opening is a little small and the cap is not permanently attached are minor drawbacks. If it had a "standard" size opening and cap arrangement like those on a Nalgene water bottle it would be perfect. I gave it 4 stars for this reason, but feel strongly that the function is flawless and highly recommend it if you have a group outing where you need to filter a lot of water. It's lightweight and "scout proof", tolerating neglect and abuse with no effect on it's functionality.
Date published: 2014-08-13
Rated 5 out of 5 by from Good for small and large groups Troop 1020 just came back from a week hiking in Colorado with 17 Boy Scouts. Had 2 of the Sawyer and plenty of water. The gravity bags were great, fill, leave to filter, fill water bottles, and repeat. 20 - 25 gallons of water per day through the filter without any problems. (We also used tablets.) A learning to pass along, back flush the filter often (even from "clear" streams). This will keep the flow rate fairly high (about 10 minutes/gallon). I would use a mesh bag to keep all of the pieces together on our next trip.
Date published: 2009-09-03
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Hi, does anyone know the difference (aside from the price) between the Sawyer water treatment and water filtration system?

Asked by: Roundzy Richie
The Sawyer Complete Purifier System actually purifies water. It kills protozoa, bacteria and viruses. The water treatment system will just filter water. It kills protozoa and bacteria but not viruses.
Answered by: REIservice
Date published: 2017-01-31

Are there replacement filter cartridges available for these? Specifically, the Sawyer PointONE™ 0.10 Absolute Micron Water Filter? 

Asked by: Ocwrench
We do not carry a replacement filter for this water treatment system, simply because this filter is continuously being backwashed and re-used so it has an extremely long life and may never need to be replaced. We do not have the Sawyer PointONE 0.10 Absolute Micron Water filter in stock as of March, 2017.
Answered by: REIservice
Date published: 2017-03-07

I'm interested in purchasing this water filtration system to put in my earthquake kit but the essential question is this: I have a salt system in my pool.  Will the filer work and turn it into drinking water?

Asked by: Canyon life -
The 4 liter Complete Water Treatment System will not remove the salt from saltwater. REI does not sell desalinators.
Answered by: REIservice
Date published: 2016-08-29

I'm going to be traveling to South America, would this system make drinking water safe by using this system?

Asked by: Rainbird
​Yes, this filter cleans all water of Protozoa and Bacteria.
Answered by: REIservice
Date published: 2017-06-22

The specs say that this system is only good for bacteria and protozoa (not viruses) so what makes this different from the cheaper version of this system. If it kills viruses, why don't the specs say that?

Asked by: Rainbird
​This system effectively filters Protozoa, Bacteria, and particles from your water with a hollow fiber membrane filter. The difference in price between the 2 systems is because the less expensive version is 2 liters, whereas this treatment system is 4 liters.
Answered by: REIservice
Date published: 2017-06-22

How rugged is the filter bags?... would they be prone to leakage or bursting?

Asked by: Chickenhawk
The bags included with this treatment system are very durable. We have not received any reports of them bursting or leaking.
Answered by: REIservice
Date published: 2017-06-22
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Back to top

Please select a color/color.

Reviews

Rated 5 out of 5 by from Excellent My partner & I have traveled a lot in India/Nepal & we do not want to add to the extensive pollution with a trail of plastic bottles. We used a pump filter & although excellent, took time. We gave this one to a friend living in Kathmandu who writes, "The water filter is working like a charm!!! I am never out of water, and its so easy because it just works with gravity! I just use tap water---nothing else required. And i know its good--and no illness! I would highly recommend it. Just maybe bring coat hangers or something because one of the bags does need to be higher than the other." If we stay in Asia for extensive time again, this filter is the one.
Date published: 2011-08-31
Rated 5 out of 5 by from Super Easy! We love this water filter. All you have to do is fill the dirty bag, prime the filter and then sit back while it does all the work. I have never used a pump filter and don't see any reason to ever change. The extra capacity is great when we are backpacking with the whole family. Plus it gives so much flexibility for extra water storage and hydration pack. One thing I do find helpful is to keep something with the filter to scoop water. If you have a shallow or slow moving water source it is almost impossible to fill the dirty bag. I cut a 20 oz bottle in half and keep it with the filter.
Date published: 2012-06-18
Rated 5 out of 5 by from Awesome and Easy! This is my first review. As a nurse specializing in infectious disease, good water while hiking is very important to say the least. I wanted more than the 0.2 micron filtration that many other products provide. This one has it! This Sawyer system is so easy to use. It filters very quickly, although alittle longer than the specs state by a minute. However, you can set it up and go on to other things to do when setting up camp and then fresh water is ready for you! Thanks for a great product!!
Date published: 2013-01-06
Rated 5 out of 5 by from Great filter! I used this filter system in the BWCA last week to filter water for a group of 5. I tested it ahead of time and it performed as well in the field as it did in my kitchen. Filtered 4 liters in mere minutes with no effort. There was no discernible slowing of the filtering process over the course of our 4 day trip. I had previously owned a Katadyn Base Camp Filter which clogged after 2 days. The Sawyer is not as easy to fill but so much more reliable! I bought a Sea to Summit collapsible bucket to fill it with and that worked great. I do agree with a previous reviewer that you need extra bungee cords for hanging this system. I got a stuff sack to hold the filtering system, bucket, and bungees so it is ready to go. When I got home I back-flushed the filter until water was clear, followed the sanitization procedure and left it out to dry. So easy!
Date published: 2013-07-26
Rated 5 out of 5 by from Outstanding filter system! My friends and I just returned from 10 days floating the Dean River in the wilderness of British Columbia. We were dropped off and picked up by helicopter, so weight was an issue. The weather was hot and humid, and it became quickly apparent that maintaining hydration would be a top priority. This filter exceeded every expectation for producing water for the three of us. Every day, when setting up a new camp, we would assemble our filter station and immediately start producing water. Using a length of climbing webbing prussocked around a tree branch or tent pole, we would hang the filter bags. Then right next to it we would hang an REI collapsable bucket which would be used to fill the grey filter bag, and we would place a five-gallon collapsable water jug below the blue bag. Then it was a simple matter of keeping the grey bag full and emptying the blue bag. With the filler bucket hung from its own branch "cycling the water maker" as we called it took just a couple of minutes including the trip to the river, and one person could do the whole job. Throughput was excellent. Filling the 5-gallon jug took at most one hour. The only quibble I have with the whole system is rolling it up for transport. The bags don't nest or roll well, and are difficult to store in a safe and space-efficient manner. However, that is no reason not to buy this product.
Date published: 2013-08-12
Rated 5 out of 5 by from Ideal system for volume This system is ideal for filtering volume large hydration needs or for bigger groups. The liter/min filter rate is a bit inflated as others have said. It does take about 10-15 min for the full 4qt/1gal to filter. It is a bit bulky for a single person, but it's capability to accomodate small groups makes it negligable with gear distribution. The valve on the blue bag makes filling other containers/bladders quite easy. I wish the extra hose they provided to turn it into a hydration bladder would have come with a bite valve, but with my picky prefferences to them I probbably would have replaced it anyway. I purchased a SteriPEN FitsAll Filter from REI to keep sediment out of the gray bag and prevent clogging. Works like a champ. It fits so well into the gray bag opening you'd think it was manufactured just for it. Link for SteriPEN FitsAll Filter: http://www.rei.com/product/784450/steripen-fitsall-filter I recommend a small bailing bucket or plastic bottle with the top cut off to collect water and pour into the gray bag. Can be a bit cumbersome to try and dip the bladder into shallow water.
Date published: 2013-05-21
Rated 4 out of 5 by from Scout proof, nothing better! I am a scout leader, we take 3-4 high adventure trips per year in the North Cascades, Alpine Lakes and Mt. Rainier area with 12 people for 2-5 days each. This filter has been bullet proof in all conditions, and performs admirably even in waters full of glacial silt. A simple back flow is all the cleaning it has ever needed on trail. This is our main source of water and is constantly in use in camp. The only downside it has is that the grey water bag needs to be filled in water deep enough to submerge it, or you need to fill it using another container. I feel the that the fill opening is a little small and the cap is not permanently attached are minor drawbacks. If it had a "standard" size opening and cap arrangement like those on a Nalgene water bottle it would be perfect. I gave it 4 stars for this reason, but feel strongly that the function is flawless and highly recommend it if you have a group outing where you need to filter a lot of water. It's lightweight and "scout proof", tolerating neglect and abuse with no effect on it's functionality.
Date published: 2014-08-13
Rated 5 out of 5 by from Good for small and large groups Troop 1020 just came back from a week hiking in Colorado with 17 Boy Scouts. Had 2 of the Sawyer and plenty of water. The gravity bags were great, fill, leave to filter, fill water bottles, and repeat. 20 - 25 gallons of water per day through the filter without any problems. (We also used tablets.) A learning to pass along, back flush the filter often (even from "clear" streams). This will keep the flow rate fairly high (about 10 minutes/gallon). I would use a mesh bag to keep all of the pieces together on our next trip.
Date published: 2009-09-03
  • y_2017, m_7, d_19, h_3
  • bvseo_bulk, prod_bvrr, vn_bulk_1.0.0-hotfix-1
  • cp_1, bvpage1
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Questions & Answers

Hi, does anyone know the difference (aside from the price) between the Sawyer water treatment and water filtration system?

Asked by: Roundzy Richie
The Sawyer Complete Purifier System actually purifies water. It kills protozoa, bacteria and viruses. The water treatment system will just filter water. It kills protozoa and bacteria but not viruses.
Answered by: REIservice
Date published: 2017-01-31

Are there replacement filter cartridges available for these? Specifically, the Sawyer PointONE™ 0.10 Absolute Micron Water Filter? 

Asked by: Ocwrench
We do not carry a replacement filter for this water treatment system, simply because this filter is continuously being backwashed and re-used so it has an extremely long life and may never need to be replaced. We do not have the Sawyer PointONE 0.10 Absolute Micron Water filter in stock as of March, 2017.
Answered by: REIservice
Date published: 2017-03-07

I'm interested in purchasing this water filtration system to put in my earthquake kit but the essential question is this: I have a salt system in my pool.  Will the filer work and turn it into drinking water?

Asked by: Canyon life -
The 4 liter Complete Water Treatment System will not remove the salt from saltwater. REI does not sell desalinators.
Answered by: REIservice
Date published: 2016-08-29

I'm going to be traveling to South America, would this system make drinking water safe by using this system?

Asked by: Rainbird
​Yes, this filter cleans all water of Protozoa and Bacteria.
Answered by: REIservice
Date published: 2017-06-22

The specs say that this system is only good for bacteria and protozoa (not viruses) so what makes this different from the cheaper version of this system. If it kills viruses, why don't the specs say that?

Asked by: Rainbird
​This system effectively filters Protozoa, Bacteria, and particles from your water with a hollow fiber membrane filter. The difference in price between the 2 systems is because the less expensive version is 2 liters, whereas this treatment system is 4 liters.
Answered by: REIservice
Date published: 2017-06-22

How rugged is the filter bags?... would they be prone to leakage or bursting?

Asked by: Chickenhawk
The bags included with this treatment system are very durable. We have not received any reports of them bursting or leaking.
Answered by: REIservice
Date published: 2017-06-22
  • y_2017, m_7, d_19, h_2CST
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  • cp_1, bvpage1
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